Debugging exceptions w/ line numbers

[heech]

Hi all,

I'm relatively new to C#, so not sure of all the ins/outs of the exception object. When exceptions occur, I'd *like* to see the detail of when/where it occurred. (Something similar to Java's very detailed PrintStackTrace.)

So, these are exceptions being thrown *within* my code, nothing coming up from the library or other third-party code... truth is, I've been bad in writing clean code, so sometimes I get null reference exceptions. Bottom line, these are in the same function that I have the try/catch in.

I've been using the stackframe, and calling GetLineNumber() to try to do that in C#. But not seeing the line number.. it always comes across as zero. Any suggestions?

[NinjaTrader_Dierk]

Hmm ... I recall a thread dealing with that issue on this forum a few weeks ago. Unfortunately I don't have a link at hand ...

[heech]

This must be it, thanks

http://www.ninjatrader-support2.com/vb/showthread.php?t=12156&highlight=line+number

Should've done a search first.

EDIT. Maybe not, no answer in that thread either. It's definitely possible to get line numbers... this is the code source (from Google):

StackTrace st = new StackTrace(new StackFrame(true));
Console.WriteLine(" Stack trace for current level: {0}", st.ToString());
StackFrame sf = st.GetFrame(0);
Console.WriteLine(" File: {0}", sf.GetFileName());
Console.WriteLine(" Method: {0}", sf.GetMethod().Name);
Console.WriteLine(" Line Number: {0}", sf.GetFileLineNumber());
Console.WriteLine(" Column Number: {0}", sf.GetFileColumnNumber());

... after googling a little more, it looks like the problem is our code isn't being compiled with debugging symbols.

So the new question for you Dierk... any way for us to compile with debugging symbols? I recall you guys giving instructions on attaching to the process with VS, so I'd assume the answer is yes..

[NinjaTrader_Dierk]

There was another one dealing with debug mode I believe...

[heech]

There was another one dealing with debug mode I believe...

This is probably what I need to do... even though I'm not using VS, perhaps turning on debug mode will do the trick for my purpose.

http://www.ninjatrader-support.com/HelpGuideV6/helpguide.html?VisualStudio

Thanks for the pointer. Hopefully it won't affect performance too dramatically.

[Bidder]

Old thread but still at the top of google searches.

Here's how I trap the indicator name and line number using try/catch and debug mode in NT8.

try{
//Problem code
} catch(Exception Err){Log(Err.ToString(), LogLevel.Warning); }

From trace file

With compile debug mode on contains line number

2022-04-22 09:31:31:426 WARNING: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative
and less than the size of the collection. Parameter name: index    at System.ThrowHelper.ThrowArgumentOutOfRange
Exception(ExceptionArgument argument, ExceptionResource resource)    at NinjaTrader.NinjaScript.Series`1.set_Item
(Int32 barsAgo, T value)    at NinjaTrader.NinjaScrip[B]t.Indicators.Customized.PriceMarker.OnBarUpdate()[/B] in
c:\Users\AdminUser\Documents\NinjaTrader 8\bin\Custom\Indicators\Customized\PriceMarker.c[B]s:line 170[/B]

With compile debug mode off does not show line number:

2022-04-22 09:36:17:190 WARNING: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative
and less than the size of the collection. Parameter name: index    at System.ThrowHelper.ThrowArgumentOutOfRange
Exception(ExceptionArgument argument, ExceptionResource resource)    at NinjaTrader.NinjaScript.Series`1.set_Item(Int32 barsAgo, T value)    
at NinjaTrader.NinjaScript.Indicators.Customized.PriceMarker.OnBarUpdate()